Collapsible demountable rim.



E. H. WULFF.

coLLAPsmLE DEMOUNTABLE RIM.

APPLICATION FILED IAN. 9,1918. 1,292,945. Patented Jan. 28,1919.

2 SHEilSf-'SHEU L v NTOR E. H. WULFF.

Patented Jan. 28, 1919.

2 SHEETS-SHEE 2.

ATTORN EY .from whichV it may be taken wit EZBA HERMAN WULFF, 01 TQLFDO, 0R10.

COLLAPSIBLE DEMOUNTABLE BIM.

To all whom it may concern.'

Be it known that l, EzRA H. `WULFF a citizen of the United States, residing at oledo, in the county of Lucasand State of Ohio have invented a new and useful Col` lapsiiile Demountahle Rim, of which the. following is' a specification.

This invention has reference Lto col-laps'- ible demountable rims, and its objeetais to provide a demountable rim `for automobile tires on which the tire may be laced, or

a minimum amount of labor.

`ln, accordance with the invention, the rim comprises a plurality of sections hinged toethenso that Aits eiicctive diameter may e redpced to permit it 'to be placed within the tire casing and then expanded to the fullldiameter, thus doingaway with the necessity of prying the casing on or ofi' the rim. gether, stii'ening strips are provi ed, so that there is no liability of collapse of the rim under the tire pressure, Whether or not the rim be on the wheel, but on the removal of the stifening strips, the eolp lapse` of the rim is readily accomplished.

Furthermore, at the point where the collapsing break of the rib is accomplished, bri( ing means 'are provided to cross the gap in the rim at the breaking point.

The invention will he best` understoodl from a consideration ot the following detailed Idescription, taken in connection with tli'ei accompanying drawings forming part of this specification, with the further understandingthat While the drawings show a practical form of the invention, the latter is not confined to any strict conformity with the showing of the drawings but may be changed and modified sof long assuc changes and modifications come within the scope of the appended claims.

Tn the drawmgs- Fignre 1 is an elevation of the collapsible rim with the tire applied thereto, the rim boing shown in circmnl'erential section;

Figf 2` is a circumferential section of the rim in the collapsed condition;

Fig. 3 is a cross section on the line 3--3 of Fig. l, but shown on a larger scale,

Fig. 4 is an elevation of the rim, with the tire omitted;

Fig. 5-is a section on the line 5--5 of Fig. 4, but drawn on a larger scale;

Fig. 6 is a face View of thevbi'eaking hinge Speeiuation of Letters Patent.

`viewbeing on a larger scale than fi;

Where the rim sections are hirged to` Patented Jan. 28, 29H14.

Application Med January 9, 1918. Serial No. 211.029.

of the rim seen at the bottoni of Fig. 1i, the

. 'l' 1s a rear View of the hinge'shown at the top of Fig. 4, and drawn on. the no scale of Fig. 6; Figa 8 is a perspective View of one of the hinge stiilenin strips;

Fig. 9 is a etail. section on the line {iw-9 of Fig. 8; S5

Fig. 10 isa perspective view of a tool for collapsing the rim.

Referrlng to the drawings, there is shown a rim 1 of suitable `shape to receive and retain a pneumatic tire 2 of customary con- 7o struction. The rim is composed of se tions 3 and 4 connected together at one een by a hinge 5, and other two sections 6 and 7 connected together at one end by a hinge 8, while the other ends of the sections 5 and 7 are connected to the sections 2i and 4. by respective hinges il and 10.` The hinge 9 connects the section i to the sectimi 3, and the hinge 1G connects the section i te le-x. section 4. The rim is thus composed oi four sections, with the sectie-ns and i e ;L siderably ionger than the sections i? i In the particular construction chrom., Y combined length of the sections ll and i" less than that of either section or @ne section, say the section 3, .is pr-nfided with a passage 11 for the usual nipple li of ne customary inner tube 13 et the tire The hinge 8 is somewhat elongated ci? cinnferentially of the rim to permit the is* e sections and 7 te approach se ila broken inwardly toward the cef strnctnre, the sections il and 3,-, and the ser tions 7 and i. breaking to a far liess extent, while the sections 3 and 4 the iiigc 'i @c nove but slightiy from circnniferenrini lation. In order io permit the more eatensive breaking at the hinge 8. the elle@ of taie rim, which are of ciisnnel forli, harepreiongations 14 from site section i beyond the in!) hinge 8, nhiie the sides of the section G e less extensive and. do not reach the hinge bui at their ends toward the hinge 8, are provided with notches o! recesses 15 extendlng lengthwise of the section G, :ini wat ma' away asindicaed at ifi to receive Y tensions l, so that the latter b i-idgin pieces snpporiiite fis I tions o the tire easing i5 www 711ml tho rim expanded tu iin iI i, n@

cular pleit n, ilu' extension.. recesses nini constltllir i Mw circular series of channel rim sections or segments hinged together at their meeting enden' one of two meeting sections having itse'tdes prolongedind overlapping the corresponding sides of the other section when theirim is ex ended, and the second section having its si es provided with recesses open at the outer ends and reeeivin the prolongations of the sides of the rst-named section.

4. A collapsible tire rim comprising a circular series of rim sections or segments hinged together at their meeting ends, with two of the sections having their hinge connectionsrprolongated to permit the breaking or biickltn thereof toward the center of the rim, one of1 said two sections having its side portions prolonged beyond the hinge to constitute tongues, and the other ot said two sections havin its; side portions stopping short of the hinge and provided with recesses for receiving the tongues` whereby thc #sections interlock when tho rim is cxpanded, and the tongues bridge the space lietwccii the sections diie to the prolongation ot' the hinge.

5. A collapsible tire rim comprising acirciilar scrics of sections hinged together at their mccting ends for the collapsing of the rim, iaid scctions on opposite sides .of the hinge connections having matching channels with bridge pieces extending across them, and strips adapted to be lodged in the channels beneath the bridge pieces for stii'l'- ening the hinges and preventing the collapse of the rim.

(i. A collapsible tire rim comprising a circular series of sections hinged together at their meeting ends for the collapsing of the rinnsaid sections on opposite .sides of the hin e connections having matching channels witi bridge pieces cxtcnding across them, and strips adapted to bc lodged in the channels beneath the bridge pieces for stiffcning the hinges and preventing thc collapse of the rim, said strips each being provided with hn lrer recesses and with a hollow lng at one ein with n. @roes member for the application of a removing tool. E

7. A collapsible tire rim comprising a circular series of rim sections or segments hinged together at the meeting ends, with the hinge of two joined sections arranged for collapsing or buckling toward the central portion of thc rim, said sect-ions wlicrc hinged togctlicr having matching channels on the iniicl face of the rim` with thc cham nels tapering in thc direction of their lengths, and tapering strips adapted to Seat in the tapering channels, said striis each having Hoger-receiving reccsscsdinti a hollow lngr with a cross member, and certain of thc rim segments being provided with notches in thc channels for receiving the hollow luge.

In testimony that I claim the foregoing as my own, 1 havc hereto ntlixcd my signature in the presence ol' two witnesses.

EZRA HERMAN \VULFF. Witnesses:

ALFRED M. Duchi', .RALPH lV. (haven. 

